Hi

I have a SharePoint library where some word documents are there. I need to open one of the  document and change some values in this document then would convert same document into pdf. All these things I am doing into Powershell script.

Unfortunately, I don't have office 2010 client application in SharePoint 2010 server. 

Can you please tell me how I can use 

Microsoft.Office.Interop.Word  

dll file into my script and what else I have to do to achieve my goal?  Company can give me permission to register dll but I need your help how it can be done. If someone can explain in step by step process that would be great.

Is there any possibility to do same thing which I want to do without installation of office client's application?